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《Radiologic Practice》 2004-06
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MRI features and differential diagnosis of extradural lymphoma and leukemia of the spine

WU Xian heng,LIN Shi xu,ZENG Xiang ting,et al.Department of Radiology,Shantou Central Hospital,Gangdong 515031,P.R.China  
Objective:To study the MRI features of lymphoma and leukemia,and to improve the diagnostic accuracy . Methods:The MRI manifestations of 17 cases of extradural lymphoma and leukemia with pathological confirmation were analysed, including 13 cases of lymphoma and 4 cases of leukemia.All patients were examined with plain MR scans and 11 cases were examined with contrast enhanced MR scans.Results:Among 13 cases of lymphoma,the lesions located primarily in the thoracic vertetrae (n=10)and lumbo sacral region (n=3). All cases showed long T 1 signal and long T 2 signal,with extradural intraspinal spindle form mass.On transverse T 2WI the lesion demonstrated crescent iso intense mass around the dural sac. In leukemia,all of 4 cases showed areas of evenly distributing diffuse patchy or mottled long T 1 and long T 2 signal. Conclusion:MRI has great value in diagnosis and differential diagnosis of extradural lymphoma and leukemia of the spine.
【CateGory Index】: R738
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